Using RotellaT 15w40 diesel oil (SH) *used to be* a viable work-around, before they legislated the required use of catastrophic converters on diesel engines too.

After doing my research, I see you had the wiped lobe syndrome on a 454 build...Did you ever go with the roller cam in that motor, or did you do another Hyd. flat tappet cam after your heart was broken?